Journal article

A genetic epilepsy rat model displays endophenotypes of psychosis

Nigel C Jones, Sally Martin, Ika Megatia, Tahir Hakami, Michael R Salzberg, Didier Pinault, Margaret J Morris, Terence J O'Brien, Maarten van den Buuse

NEUROBIOLOGY OF DISEASE | ACADEMIC PRESS INC ELSEVIER SCIENCE | Published : 2010

Abstract

The incidence of psychosis is increased in people with epilepsy, including idiopathic generalized epilepsies. To study the biological basis for this co-morbidity, we compared GAERS, a genetic rat model of absence epilepsy, to non-epileptic control rats (NEC). Mature, 14-week old GAERS showed enhanced amphetamine-induced locomotor hyperactivity - a feature also present in young (6-week old) GAERS prior to epilepsy onset. Prepulse inhibition and its disruption by psychotropic drugs did not differ between strains, although GAERS displayed elevated startle responses at both epileptic and pre-epileptic ages. The frontoparietal cortex of GAERS displayed a twofold increase in the power of gamma (30..

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